Security coupling-link



G. W. CORWIN.

SECURITY COUPLINGALINK. APPLICATION FILED JAN. 31, 1920.

1,354,305, Patented 001;. 5,1920.

U flange Wz arm'n Ks UNITED STATES GEORGE W. CORWIN, OF YONKERS, NEW'YORK.

SECURITY COUPLING-LINK.

Specification of Letters Patent.

Patented Oct. 5, 1920.

7 Application filed January 31, 1920. Serial No. 355,322.

To all whom it may concern: 1 Be it known that I, GEORGE WV. CoRwIN, a citizen of the United States, and a resident of .Yonkers, county of Westchester, and State of New York, have invented a new and useful Security Coupling Link, of which the following is a specification.

The object of my invention is the production of a simple, cheap, but effective one.

piece link coupling for various utilities and purposes,a connective means by which facility of manipulation is attained in conjunction with safety and security. The invention consists essentially in the specific construction and arrangement of parts described and claimed,a distinctive feature being the configuration of the interlocking medial ends of the spring arms of the de vice, the end of one spring arm being formed with a coupling loop for the reception of the end of the other spring arm, which latter is formed into a straddle hook adapted to engage the spine of the link and thereby hold the parts of the contrivance in closed relationship, all as hereinafter fully set forth.

In the accompanying drawings,

Figure 1, is a perspective view of my security coupling link in its simplest form, with the ends of the spring arms of the device interlocked medially with the spine and with each other, as in use;

Fig. 2, is what may be designated as a top or front view of the coupling link, closed as in Fig. 1;

Fig. 3, is a view similar to Fig. 1, except that the straddle hook is not in engagement with the spine of the link;

Fig. 1, is also a perspective view of the device, similar to Fig. 1, but showing the ends of the spring arms disengaged;

Fig. 5, is a perspective View of the coupling link closed, showing a modification in which the spine is formed with a notch or.

indentation for the reception of the straddle hook;

Fig. 6, is a perspective view of the same, with the straddle hook disengaged;

Fig. 7 is another perspective of the same modification, showing the ends of the spring arms unlocked; I

Fig. 8, is a side elevation of my security coupling link, closed, and formed at its extremities with anti-slip eyes for the attachment of end connections;

Fig. 9, is a side elevation of the coupling link, closed, and adapted for attachment to relatively broad end connections, such as bands, straps, or the like.

In the making of my security coupling link a wire blank of suitable elastic resilient material (preferably metallic) is used, bent permanently into shape and consisting essentially of the spine 8, and the spring arms 8, 8 one formed with a loop 8 and the other with a straddle hook s, the latter adapted to pass through said loop 8 and to embrace the medial portion of the spine 8, as shown inFigs. 1, 2, 5, 8 and 9,the elasticity and resiliency of the material used in the formation of the link admitting of the easy manipulation of the spring arms 8, s to effect either the interlocking of the parts, as in said Figs. 1, 2, 5, 8 and 9, or their disengagement, as in the other figures of the drawing.

If found expedient the spine 8, may be formed with a notch or indentation .9 as shown in Figs. 5, 6 and 7, for the reception of the bight of the straddle hook a and to counteract any tendency of said hook to slide on the spine, but this is not an indispensable feature of my construction, and need only be resorted to where great accuracy of lock engagement is desirable. Otherwise, and under ordinary conditions and exigencies of use, the limit of movement of straddle hook 8 on the spine prescribed by the loop s is sufiicient for all practical purposes, and certainly sufiicient to prevent accidental disengagement between hook and spine when the parts are sprrmg together in interlocked relationship.

0, 0, represents ends of any connective means which it is desired to couple together; and to prevent the slipping thereof on the coupling link, the latter may be formed with eyes 8, s, at its extremities as shown in Fig. 8; or may be made with rectangular extremities s 8 as in Fig. 9, for the accommodation of strap connections 0, 0.

In fact the configuration of my security coupling link may be changed and modified considerably in adapting it to the varying requirements of purpose and use, Without deviating from the spirit and intent of my invention, nor the scope thereof,the essential and indispensable features involved being the spring arms, one formed with the loop 8 and the other formed with the hook 8, adapted to pass through the loop .9 and to straddle the spine 8, as herein set forth.

In this connection it may be stated that the term loop is herein used its broadest sense, as including any curvature, double, or bend, of the end of the spring arm that will admit of the passage of the straddle hook s and cooperate with the latter in effecting and maintaining the interlocking of parts described.

The purposes for which my security coupling link may be used are too many and varied-to be enumerated herein, nor do I limit myself in this respect, as it may be adapted in shape, size, strength, etc., to

be efficacious- Wherever a practically positlve, lockable and unlockable coupling device, 1s" desirable for securing together temporarily, detachably, or otherwise,.connecfinger mai'ii'pul'ation thereof. Nevertheless,

the requisite manipulation by hand for effecting' either the looking or unlocking of copulative parts is simple, and may be accomplished expeditiously.

hat I claim as my invention and desire to secure by Letters Patent is,

' 1. As an artiele of manufacture, a one piece elastic resilient security coupling link of the character designated, comprising a spine portion having spring arms formed with medially interlocking ends, the end of one spring armconsisting of a loop, and the end of the other spring arm consisting of a straddle hook adapted to pass through theaforesaid loop and to engage the spine ofthe link, for the p urpose described.

2. As an article of manufacture, a one piece elastic resilient security coupling link of the character designated, comprising a spine portion having spring arms formed with medially interlocking ends, the end of one spring arm consisting of a loop,.and the end of the other spring arm consisting of a straddle hook adapted to pass through the aforesaid loop and to engage the spine of the link, said spine being formed With a medial notch or indentation for the reception of the bight of said'straddle hook, for the purpose described.

GEORGE W. CORWIN.

lVitnesses:

' Gno. WVM. MIATT, MADELINE- A. JAooBsoN. 

